Further properties of isoglutamine-oxytocin; inhibition of pressor activity of vasopressin.

Summary1) The isoglutamine isomer of oxytocin has been found to inhibit significantly the pressor activity of administered vasopressin in the anesthetized rat. 2) Various data suggest that acetic acid is lost when the polypeptide acetate is rigorously dried. Isoglutamine-oxytocin forms a crystalline flavianate salt.